They are home made by us in Bristol, England, using 3mm white vennered MDF that conforms to E1 (low) formaldehyde levels and is described as 'Laser Grade' MDF and is the safest and best MDF for using in a laser cutter. It is an MDF core product and should not be submersed in water or exposed to rain. They should only be cleaned with a light moist cloth or wet wipes. Buyer is responsible for all postage costs and any loss in value if an item isn't returned in its original condition. Refunds would exclude the original postage/shipping costs. No refunds or exchanges allowed on personalised items, personalisation and gift wrapping.